The Rosemount 4051SFP Integral Orifice Flow Meter provides easy installation and is engineered to facilitate highly accurate flow measurement in small line sizes (0.5 - 1.5 in. or 15 - 40 mm). With an industry-leading 20 year warranty and 20 year stability, the Rosemount 4051SFP Integral Orifice Flow Meter is built to withstand tough processes and harsh environments. Bluetooth® connectivity lets you simplify configuration and maintenance while increasing personnel safety by helping to avoid hazardous locations. Plus, the built-in advanced diagnostics give you more insights and help keep you informed before operations are impacted.